Calculate the Young's modulus (in GPa) in the longitudinal direction of a unidirectional carbon fiber reinforced epoxy

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Question:

Calculate the Young's modulus (in GPa) in the longitudinal direction of a unidirectional carbon fiber reinforced epoxy composite having 0.35 volume fraction of fibers. The Young's modulus of the carbon fiber is 230 GPa and the Young's modulus of the matrix is 1,800 MPa